Patents by Inventor Sebastian Nervi

Sebastian Nervi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10330564
    Abstract: A method for predicting distortion and residual stress in a workpiece resulting from a peening process may include the steps of providing a coupon including residual stress induced in a coupon surface by the peening process, calculating a moment coefficient representative of residual stress induced in the coupon surface, calibrating a stress function to the moment coefficient, applying the stress function to a workpiece model of the workpiece, and computing at least one of predicted distortion and residual stress of the workpiece resulting from application of the calibrated stress function to the workpiece model.
    Type: Grant
    Filed: May 3, 2013
    Date of Patent: June 25, 2019
    Assignee: The Boeing Company
    Inventors: Sebastian Nervi, James B. Castle, William S. Hollensteiner, Vincent R. Noble
  • Patent number: 10185791
    Abstract: A system and method are provided for estimating initial stresses in and eigenstrains of a material. The system may receive measured geometric data including measurements of a material before and after the application of a manufacturing process thereto. The measurements may indicate a residual stress in a coupon after application of the manufacturing process. Estimated linear elastic strains may be calculated in respective opposing sides of the coupon based on the measured geometric data. A linear elastic reaction of the material to the manufacturing process may be calculated based at least in part on the estimated linear elastic strains. The system may then calculate an estimated initial stress in the material as a sum of the residual stress in the coupon and the linear elastic reaction of the material, and calculate an estimated eigenstrain of the material based at least in part on the estimated initial stress in the material.
    Type: Grant
    Filed: January 5, 2016
    Date of Patent: January 22, 2019
    Assignee: The Boeing Company
    Inventors: Sebastian Nervi, Jared L. Bolin, James B. Castle
  • Publication number: 20170193156
    Abstract: A system and method are provided for estimating initial stresses in and eigenstrains of a material. The system may receive measured geometric data including measurements of a material before and after the application of a manufacturing process thereto. The measurements may indicate a residual stress in a coupon after application of the manufacturing process. Estimated linear elastic strains may be calculated in respective opposing sides of the coupon based on the measured geometric data. A linear elastic reaction of the material to the manufacturing process may be calculated based at least in part on the estimated linear elastic strains. The system may then calculate an estimated initial stress in the material as a sum of the residual stress in the coupon and the linear elastic reaction of the material, and calculate an estimated eigenstrain of the material based at least in part on the estimated initial stress in the material.
    Type: Application
    Filed: January 5, 2016
    Publication date: July 6, 2017
    Inventors: Sebastian Nervi, Jared L. Bolin, James B. Castle
  • Patent number: 9539690
    Abstract: Method and apparatus are provided for processing and changing the physical characteristics of a metal workpiece into a final metal component. Predetermined processing parameters are established for achieving a final metal component. The metal workpiece is positioned securely on a support during the changing of the physical characteristics. Impacts are applied to a surface of the workpiece multiple times for achieving the final metal component while controlling the impacting with the predetermined processing parameters. A sensor is provided for continuously sensing the currently existing physical conditions of the workpiece during impacting. The predetermined processing parameters are changed into adjusted processing parameters and the impacts are changed in reaction to the currently existing physical conditions of the workpiece from the sensing and processing of the workpiece until the final metal component has been achieved.
    Type: Grant
    Filed: September 19, 2013
    Date of Patent: January 10, 2017
    Assignee: The Boeing Company
    Inventors: Lauren K. Lundquist, McKay A. Kunz, James E. Pillers, James B. Castle, John Z. Lin, Sebastian Nervi
  • Publication number: 20150075240
    Abstract: Method and apparatus are provided for processing and changing the physical characteristics of a metal workpiece into a final metal component. Predetermined processing parameters are established for achieving a final metal component. The metal workpiece is positioned securely on a support during the changing of the physical characteristics. Impacts are applied to a surface of the workpiece multiple times for achieving the final metal component while controlling the impacting with the predetermined processing parameters. A sensor is provided for continuously sensing the currently existing physical conditions of the workpiece during impacting. The predetermined processing parameters are changed into adjusted processing parameters and the impacts are changed in reaction to the currently existing physical conditions of the workpiece from the sensing and processing of the workpiece until the final metal component has been achieved.
    Type: Application
    Filed: September 19, 2013
    Publication date: March 19, 2015
    Applicant: The Boeing Company
    Inventors: Lauren K. LUNDQUIST, McKay A. KUNZ, James E. PILLERS, James B. CASTLE, John Z. LIN, Sebastian NERVI
  • Patent number: 8645086
    Abstract: A method of predicting distortion in a workpiece may include measuring residual stress induced in a coupon surface of a plate coupon by a selected manufacturing operation. The induced residual stress measurements may be fitted to a curve shape function. A moment coefficient may be calculated based upon the fitted induced residual stress measurements. The moment coefficient may be used to calibrate a stress function and corresponding stress magnitude. The calibrated stress function may be applied to a model of the workpiece such that the distortion of the workpiece may be predicted.
    Type: Grant
    Filed: September 18, 2010
    Date of Patent: February 4, 2014
    Assignee: The Boeing Company
    Inventors: James B. Castle, Sebastian Nervi, Randolph B. Hancock, Jared Bolin